A route discovery method based on received power of repeater nodes for sensor networks

In this articles, a route discovery method based on the received power of repeater nodes for sensor networks is studied. The received power information in Physical Layer of repeater nodes is added to Route Request Message, and the message is transferred from a source node to a destination node via repeater nodes. In the destination node, the most optimal route is selected from plural candidates according to the following criteria: received power level, number of hops and sequence number. From the results of computer simulations, it has been clarified that the proposed method has advantages in the route effective time, data distribution ratio and throughput comparing with the conventional method even if the route discovery time is lengthened by about 0.5 seconds.